org.cef.handler

接口 CefContextMenuHandler

所有已知实现类:

CefClient, CefContextMenuHandlerAdapter

public interface CefContextMenuHandler

Implement this interface to handle context menu events. The methods of this class will be called on the UI thread. (实现此接口以处理上下文菜单事件。此类的方法将在UI线程上调用。)

方法概要

限定符和类型	方法和说明
void	onBeforeContextMenu(CefBrowser browser, CefFrame frame, CefContextMenuParams params, CefMenuModel model) Called before a context menu is displayed. (在显示上下文菜单之前调用。)
boolean	onContextMenuCommand(CefBrowser browser, CefFrame frame, CefContextMenuParams params, int commandId, int eventFlags) Called to execute a command selected from the context menu. (调用以执行从上下文菜单中选择的命令。)
void	onContextMenuDismissed(CefBrowser browser, CefFrame frame) Called when the context menu is dismissed irregardless of whether the menu was empty or a command was selected. (无论上下文菜单为空还是选择了命令，均关闭上下文菜单时调用。)

方法详细资料

onBeforeContextMenu

void onBeforeContextMenu(CefBrowser browser,
                         CefFrame frame,
                         CefContextMenuParams params,
                         CefMenuModel model)

Called before a context menu is displayed. (在显示上下文菜单之前调用。)

参数:

browser - The browser generating the event. (-浏览器生成事件。)

frame - The frame generating the event. Instance only valid within the scope of this method. (-生成事件的框架。实例仅在此方法的范围内有效。)

params - Provides information about the context menu state. Instance only valid within the scope of this method. (-提供有关上下文菜单状态的信息。实例仅在此方法的范围内有效。)

model - Can be cleared to show no context menu or modified to show a custom menu. Instance only valid within the scope of this method. (-可以清除为不显示上下文菜单，也可以修改为显示自定义菜单。实例仅在此方法的范围内有效。)

onContextMenuCommand

boolean onContextMenuCommand(CefBrowser browser,
                             CefFrame frame,
                             CefContextMenuParams params,
                             int commandId,
                             int eventFlags)

Called to execute a command selected from the context menu. Return true if the command was handled or false for the default implementation. See cef_menu_id_t for the command ids that have default implementations. All user-defined command ids should be between MENU_ID_USER_FIRST and (调用以执行从上下文菜单中选择的命令。如果已处理命令，则返回true；对于默认实现，返回false。有关具有默认实现的命令ID，请参见cef_menu_id_t。所有用户定义的命令ID均应在MENU_ID_USER_FIRST与)

参数:

browser - The browser generating the event. (-浏览器生成事件。)

frame - The frame generating the event. Instance only valid within the scope of this method. (-生成事件的框架。实例仅在此方法的范围内有效。)

params - Will have the same values that were passed to onBeforeContextMenu(). Instance only valid within the scope of this method. (-具有与onBeforeContextMenu（）相同的值。实例仅在此方法的范围内有效。)

commandId - The id of the command. (-命令的ID。)

eventFlags - A combination of event flags defined in EventFlags (-EventFlags中定义的事件标志的组合)

返回:

true if the command was handled or false for the default implementation. (如果已处理命令，则为true；对于默认实现，为false。)

onContextMenuDismissed

void onContextMenuDismissed(CefBrowser browser,
                            CefFrame frame)

Called when the context menu is dismissed irregardless of whether the menu was empty or a command was selected. (无论上下文菜单为空还是选择了命令，均关闭上下文菜单时调用。)

参数:

browser - The browser generating the event. (-浏览器生成事件。)

frame - The corresponding frame. Instance only valid within the scope of this method. (-相应的框架。实例仅在此方法的范围内有效。)